Camera Rocket Review Our evaluation of A37 vs D90

Image Quality

RAW image quality independent of lens

SLT A37
8.8
Nikon D90
9.1
DxOMark Low light, DxOMark Color depth and DxOMark Dynamic range

Focusing

How fast and easily does the camera nail focus

SLT A37
8.6
Nikon D90
6.9
Focus lag, cross type focus points and focus points

Responsiveness

How much delay is there between you and your photo?

SLT A37
9.2
Nikon D90
8.7
Focus lag, continuous shooting and Startup delay

Reviews

What do the experts think?

SLT A37
9.4
Nikon D90
9.5
Reviews from dpreview.com, techradar.com, photographyblog.com and reviews.cnet.com

Camera Rocket Score

Image Quality, Focusing, Responsiveness and Reviews

SLT A37
9.1
Nikon D90
9.0

Winner
Sony SLT A37 

Camera Rocket recommends the Sony SLT A37  based on its focusing and responsiveness.

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Benchmarks Real world tests of SLT A37 vs Nikon D90

Low light image quality Highest ISO setting that still achieves great image quality

SLT A37
799 ISO
Nikon D90
977 ISO

Focus lag Delay between fully pressing shutter to image capture

SLT A37
109 ms
Nikon D90
208 ms

Shutter lag Delay to take a photo when prefocused

SLT A37
57 ms
Nikon D90
67 ms

Startup delay Delay from power on to first photo

SLT A37
900 ms
Nikon D90
300 ms

Continuous shooting Delay between fully pressing shutter to image capture

SLT A37
7 fps
Nikon D90
4.5 fps

Battery life How many photos per battery charge (CIPA)

SLT A37
500 photos
Nikon D90
850 photos

Features Key features of the SLT A37  vs Nikon D90 

Megapixels Maximum resolution images are captured at

SLT A37
16 MP
Nikon D90
12.2 MP

Max ISO Maximum light sensitivity of the sensor

SLT A37
25,600 ISO
Nikon D90
6,400 ISO

Focus points How many different points the camera can focus on

Screen size Larger screens make it easier to preview and review photos

SLT A37
2.6"

Viewfinder size Large viewfinders are brighter and more comfortable to use

SLT A37
0.71x
Nikon D90
0.63x

Pixel size How much area of the sensor is dedicated to each pixel

SLT A37
22.8 microns
Nikon D90
30.5 microns

Reviews Word on the street

SLT A37  vs Nikon D90 

7.3
8.0
There are also the usual array of improvements and additions to shooting controls, including an expansion of Active D-Lighting parameters (you can now go extra high), nine slots for custom Picture Control settings, which can be uploaded to Nikon's Capture NX 2 raw-processing software, as well as advanced scene modes that incorporate Picture Controls and Active D-Lighting, and that can automatically program shift to slower shutter speeds when the camera knows a VR lens is attached.
Nikon D90

Specifications Full list of technical specs

sensor

SLT A37  vs
Nikon D90 
Type CMOS CMOS
Megapixels 16 MP 12.2 MP
Resolution 4912 x 3264 4288 x 2848
Size APS-C APS-C
Area 23.4 x 15.6 mm 23.6 x 15.8 mm
Crop factor 1.5x 1.5x
Pixel size 22.8 microns 30.5 microns
Light sensitivity 100 ISO to 16,000 ISO 200 ISO to 3,200 ISO
Light sensitivity (Boost) 100 ISO to 25,600 ISO 3,200 ISO to 6,400 ISO
Codecs
RAW
JPEG
Self cleaning sensor Yes Yes

focus system

Type Phase detection Phase detection
Focus points 15 11
Cross type focus points 3 1

viewfinder

Viewfinder mirror Opaque Opaque
Viewfinder Yes Yes
Type Electronic Pentaprism
Coverage 100% 96%
Magnification 1.09x 0.96x
Viewfinder size 0.71x 0.63x

performance

Max continuous shooting 7 fps 4.5 fps
Battery life 500 850
Continuous shooting
4.5 fps, JPEG
7 fps
5.5 fps
Focus lag 109 ms 208 ms
Shutter lag 57 ms 67 ms
Startup delay 900 ms 300 ms

video

SLT A37  vs
Nikon D90 
Video 1920 x 1080 @ 29.97 fps 1280 x 720 @ 24 fps (AVI, MJPEG)
Shoots video in 24p Yes Yes
Shoots high speed video No No
Autofocus while shooting video Phase detection Manual
Autofocus type Phase detection N/A
Autofocus supports continuous Yes N/A

display

Type LCD LCD
Size 2.6" 3"
Resolution 230 k dots 930 k dots
Has a touch screen No No
Has a flip out screen Yes No
Supports live view Yes Yes

shutter

Min 30 s 30 s
Max 1/4000 s 1/4000 s

form factor

Size 124 x 92 x 85 mm 132 x 103 x 77 mm
Thickness 85 mm 77 mm
Weight 506 g 703 g
Is weather sealed No No

features

Is a smart camera No No
Includes a GPS No No
Supports HDR Yes No
Automatic panorama Yes No
Create realistic 3D images Yes No
Image stabilization
Sensor shift
Sony SLT A37
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Nikon D90
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